Grinding-machine.



PATENTED SEPT. 13, 1904.

D. H. BUCKLE.

GRINDING MACHINE.

APPLICATION FILED APR. 8, 1904.

2 SHEETS-SHBET 1.

NO MODEL.

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PATENTED SEPT. 13, 1904.

D. H. BUCKLE.

GRINDING MACHINE.

APPLICATION FILED APR. 8, 1904.

2 SHEETS-SHEBT 2.

Wi t meow amiam add/M fiW w U ITED STATES Patented September 13, 1904.

PATENT ()EEicE.

DANIEL H. BUCKLE, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR OF ONE- HALF TO JAMES E. KEEGAN AND JOHN F. HAYES,

MICHIGAN.

OF GRAND RAPIDS,

GRINDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 770,246, dated September 13, 1904. Application filed April 8, 1904. Serial No. 202,227. (No model.)

To all whom, it may concern:

Be it known thatLDANIEL H. RUcKLE, a citizen of the United-States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented new and useful Improvements in Grinding-Machines, of which the following is a specification.

This invention relates to a new and useful grinding-machine adapted to the purpose of grinding up holes that are out of true and also for enlarging round holes, if desired.

The objects of the invention are, first, to furnish an eflicient machine for truing up holes that are out of round, especially the holes in the links of locomotives, which rapidly become out of shape by use; second, for enlarging holes by means of a rotating grinder placed upon a spindle adapted 'to have two motions, one a true revolving motion and the other a motion caused by swinging the end of the spindle which carries the grinder in a true circle; third, to furnish a machine with which holes may be ground out with the greatest possible despatch and accuracy; also other ob jects hereinafter described.

These objects I accomplish by means of the mechanism illustrated in the accompanying drawings, in which Figure 1 shows a longitudinal sectional view through the spindle-sleeve and the main parts of the machine. Fig. 2 is a sectional view on the line w w of Fig. 1 with the exception that the sleeve carrying the star-wheel is turned half-way round. Fig. 3 is a plan view of the ordinary locomotive-link, showing one hole which has been trued up with my grinding device and one hole out of true. Fig. 4 shows diagrammatically an end view of the grinder and the dotted lines the swinging motion of the grinder.

Similar numerals refer to similar parts throughout the several views.

The device is mounted upon any suitable frame, which frame has a longitudinal movement or adjustment, my preferred form being shown by 2. w

3 shows a sleeve which may be referred to as a supporting-sleeve, for the reason that the same supports the spindle, said sleeve 3 having a revolving motion independently of the revolution of the spindle for the purpose of giving the peculiar swinging motion to the grinder. The sleeve 3 has two journal-bearings, (shown by 4: and 5.)

6 and 7 show two screws used for adjusting the journal bearings or bushings 4i and 5 and also for retaining the same in place. The spindle which carries the emery wheel or grinder is shown by 8. This spindle is provided with two bearings or journals, (shown by 9 and 10,) the journal 10 having considerable length for the purpose of preventing vibration of the spindle. The grinder used is cylindrical in form, and is made, preferably, of emery, as shown by 11, and is secured to the spindle by a nut 12 or by any suitable means. Surrounding the spindle is a sleeve 31, which sleeve revolves with the sleeve 3, and is provided with the bearing 18 at one end and the bearing 14 at the other end. The object of these bearings is to facilitate in swinging the spindle, so as to cause the emerywheel, in addition to its revolution around its axis, to revolve or swing around a circle, so that the grinding-wheel will touch all parts of the whole as the same is revolved. The spindle 8 is provided with a pulley 15 or other suitable means for giving it a rapid revolution.

16 is an adjustable sliding bar provided with a wedge-shaped piece 17, said bar being adjusted longitudinally for the purpose of throwing the spindle out of alinement with the axis of rotation of the sleeve 3 in the manner hereinafter described. In my preferred form for this adjustment I use a star-wheel 18, the form of which is shown in Fig. 2, and which starwheel is mounted so as to be carried with the sleeve 3 and its connecting parts. In the example of my invention shown in the drawings I have shown a star-wheel with ten teeth. In operation I move the star-wheel one tooth at a time in the manner hereinafter described. The star-wheel is mounted upon a screw-rod 19, which screw-rod is in contact with the rear portion of the sliding bar 16 and connected thereto, so as to move the same as required by tenth of a revolution.

the revolution or partial revolution of the star-wheel.

shows. a push-rod mounted in a suitable case and provided with a coil-spring 22, as shown in Figs. 1 and 2. The top of this pushrod is provided with a cap or head 21 as a convenient means for depressing the push-rod against the action of the spring. The opera tion of this part of my invention is as follows: Whenever it is desirable to move the sliding bar 16 and the wedge 17 so as to throw the front end of the spindle out of a central line with reference to the axis of rotation of the sleeve, I depress the push-rod 20 and allow the same to engage with one of the teeth on the star-wheel, giving said star-wheel one- This will move the screw-bolt 19, moving forward to the right, as shown in Fig. 1, the said bar 16 and its wedged portion 17 and this will act, as here-V inafter described, to swing the round grinder on the end of the spindle 8.

23 shows a pulley upon the sleeve 3, secured at the point 23, as shown in Fig.- 1.

24 (shown in dotted lines) represents the position of the spindle and its bearing upon its journal when thrown out of alinement with the axis of the sleeve 3.

25 25 represent the normal center line when the same is not thrown out of. alinement with the axis of 3.

26 26 represent the center line of the spindle when thrown out of center of the axial line of the sleeve 3.

3O 30 denote wedges. The wedge 30 bears against the inclined portion 17 of the bar 16, and the wedge 30 bears against the sleeve 31. The wedges 3O 30* are adapted to throw the spindle out of alinement.

30 30 denote screws for holding the wedges 3O 30 in position.

.27 is a rack which engages with the cogwheel 29, said cog-wheel 29 being supported by the base 28, as shown in Fig. 1. By turning the cog-wheel 29 by any suitable means the frame 2 and all that is carried thereby will be advanced or retreated for the purpose of presenting the grinder 11 to the hole to be operated upon) In Fig. 3 I have shown an ordinary locomotive-link by 32.

33 shows the hole after it has been trued up or made perfectly round by my grinding device.

34. shows a hole which is not round or such as is usually found after a little wear in the locomotive-link.

I deem my device peculiarly applicable for grinding out into a perfectly round form the holes in locomotive-links; but the same may be used wherever it is found desirable to true up a hole or wherever it is desirable to enlarge a round hole, whether the same be found in a locomotive-link or elsewhere.

In Fig. 4, 35 shows the periphery of the grinding device turning from the center. 36

(shown in dotted lines) represents the circle travel in enlarging or truing up an opening or hole. The center of such swinging motion is shown by 40, and the travel of the center point of the grinding-emery is shown by 37 In actual use the pulley 15 gives a very rapid motion to the grinding-wheel 11 in order that it may grind rapidly. The pulley 23 gives a comparatively slow motion to the sleeve 3, so that when the said spindle 8 is adjusted out of alinement withthecentral axis of the sleeve 3 the grinding-wheel 11 will travel in a swinging motion comparatively slow. The revolution of the spindle and the revolution of the sleeve may be produced by any suitable machinery. I have merely shown means for applying the power and have not deemed it necessary to show any particular form of power for giving such revolution.

In using my machine it is placed so that the emery-wheel or other grinder is within the hole to be enlarged or to be trued up to a round hole. The emery-wheel is then set in motion, as above described, and the spindle of the emery-wheel adjusted as the work progresses. The size of the hole ground depends upon the amount of adjustment used in swinging the emery-wheel in acircle around a given point.

Having thus described my invention, what I claim to have invented, and desire to secure by Letters Patent of the United States, is

, 1. In a grinding-machine, the combination of a rotary grinder and a spindle upon which the same is mounted, a sleeve supporting the said spindle and havingitself a rotary motion, and suitable means for adjusting the said spindie out of alinement with the axis of rotation of the supporting-sleeve. v

2. In combination with a suitable framework, a sleeve supported thereon and having a rotary motion, a spindle supported by said sleeve and carrying at one end a rotary grinder, an intermediate sleeve within the sleeve first named, suitable means for adjusting the said last-named sleeve, and a spindle out of alinement with the axis of rotation of the supporting-sleeve.

3. In combination with a spindle having a rotary grinder secured thereto, a supportingsleeve provided with means for giving the 7 same slow rotation, suitable means for givingthe said spindle rapid rotation, a sliding adjusting-bar having a Wedge-shaped end for adjusting the spindle out of alinement with the axis of rotation of the supporting-sleeve, and suitable means for giving longitudinal motion to said adjusting-bar.

4. In combination with a spindle 8,a grinder 11 supported thereon, said spindle being provided with suitable journal-bearings, a sleeve 31, and a sleeve 3 rotating independently of the spindle, suitable means forgiving rotation In testimony whereof I have hereunto set to the spindle and sleeve, a longitudinal admy hand in presence of two subscribing wit- IO justing-bar 1f; hfivinggt wedge-shaped poiitiofi nesses.

engaging wit 1 t e we ge 30, a star-whee an 1 suitable means for revolving said star-wheel, DANIEL RULKLE' a screw-bolt connected to said star-wheel and Witnesses:

said adjusting-bar 16 for the purpose of ad- 4 EDWARD TAGGART,

justing the said spindle. v MARY S. TooKER. 

